Flexible display structure and manufacturing method thereof, and display device

Abstract

The present disclosure provides a flexible display structure and a manufacturing method thereof, and a display device, which belong to the field of display equipment. The flexible display structure includes a reinforcing adhesive strip, a stacked flexible display panel and a supporting layer, wherein the flexible display panel has a first surface and a second surface opposite to each other, and a first side surface connecting the first surface and the second surface, wherein the reinforcing adhesive strip is located on the first side surface, and wherein the reinforcing adhesive strip bonds the flexible display panel and the supporting layer. By arranging a reinforcing adhesive strip on the first side surface, and bonding the flexible display panel and the supporting layer with the reinforcing adhesive strip, the flexible display panel and the supporting layer are more tightly combined, and the reinforcing adhesive strip can improve the bending performance of the flexible display structure, and reduce the possibility of the flexible display panel and the supporting layer being separated and delaminated in normal use.

Description

Technical Field

[0001] The present disclosure relates to the field of display devices, and in particular to a flexible display structure and a manufacturing method thereof, and a display device. Background Art

[0002] Flexible display screens are bendable and deformable. Compared with traditional display screens, flexible display screens can be bent or folded, and have many advantages such as strong impact resistance, strong vibration resistance, light weight, and easy to carry. Therefore, flexible display screens are increasingly widely used.

[0003] The flexible display structure is an important component of the flexible display screen. The flexible display structure usually includes a flexible display panel and a support layer. The flexible display panel and the support layer are bonded as a whole. The flexible display screen will experience multiple bends during use. After multiple bends, the flexible display screen is prone to separation and delamination of the flexible display panel and the support layer, which affects the normal use of the flexible display screen. Summary of the invention

[0004] The embodiments of the present disclosure provide a flexible display structure and a manufacturing method thereof, and a display device. The possibility of separation and delamination of the flexible display panel and the support layer can be reduced. The technical solution is as follows:

[0005] On the one hand, an embodiment of the present disclosure provides a flexible display structure, including a reinforcing strip, a stacked flexible display panel and a supporting layer, wherein the flexible display panel has a first surface and a second surface relative to each other, and a first side surface connecting the first surface and the second surface, the reinforcing strip is located on the first side surface, and the reinforcing strip bonds the flexible display panel and the supporting layer.

[0006] Optionally, the supporting layer has a third surface and a fourth surface relative to each other, and a second side surface connecting the third surface and the fourth surface, the third surface is attached to the second surface, the orthographic projection of the flexible display panel on the third surface is located within the third surface, the reinforcing strip is bonded to the third surface and the first side surface, or the reinforcing strip is also located on the second side surface, and the reinforcing strip is bonded to the third surface, the first side surface and the second side surface.

[0007] Optionally, the supporting layer has a third surface and a fourth surface relative to each other, and a second side surface connecting the third surface and the fourth surface, the third surface is attached to the second surface, the orthographic projection of the flexible display panel on the third surface coincides with the third surface, and the reinforcing strip bonds the first side surface and the second side surface.

[0008] Optionally, the reinforcing adhesive strip is distributed between a plane where the first surface is located and a plane where a surface of the supporting layer away from the flexible display panel is located.

[0009] Optionally, the flexible display structure further includes a transparent cover plate, which is stacked on the flexible display panel, and the flexible display panel is located between the transparent cover plate and the supporting layer, and the reinforcing adhesive strip bonds the transparent cover plate and the flexible display panel.

[0010] Optionally, the transparent cover plate has a fifth surface and a sixth surface relative to each other, and a third side surface connecting the fifth surface and the sixth surface, the sixth surface is attached to the first surface, and the orthographic projection of the flexible display panel on the sixth surface is located within the sixth surface; the reinforcing strip is bonded to the sixth surface and the first side surface, or the reinforcing strip is also located on the third side surface, and the reinforcing strip is bonded to the first side surface, the sixth surface and the third side surface.

[0011] Optionally, the transparent cover plate has a fifth surface and a sixth surface relative to each other, and a third side surface connecting the fifth surface and the sixth surface, the sixth surface is attached to the first surface, the orthographic projection of the flexible display panel on the sixth surface coincides with the sixth surface, and the reinforcing strip bonds the first side surface and the third side surface.

[0012] Optionally, the reinforcing strip is distributed between the plane where the fifth surface is located and the plane where the fourth surface is located.

[0013] Optionally, the surface of the reinforcing strip away from the first side surface is a plane or a smooth curved surface.

[0014] Optionally, a distance between a surface of the reinforcing strip away from the first side surface and the first side surface is 5 μm to 300 μm.

[0015] Optionally, the reinforcing strip is arranged around the first side surface.

[0016] Optionally, the reinforcing adhesive strip is formed by curing with UV-moisture dual-curing adhesive.

[0017] Optionally, the storage modulus of the reinforcing rubber strip is 60kpa to 150kpa, and the shear strength is 3kgf / cm 2 ~5kgf / cm 2 .

[0018] Optionally, an adhesive layer is provided between the flexible display panel and the supporting layer, and an orthographic projection of the adhesive layer on the supporting layer is located within an orthographic projection of the flexible display panel on the supporting layer.

[0019] Optionally, the flexible display panel includes a stacked panel body, a polarizer and a polyethylene terephthalate film, the polarizer and the polyethylene terephthalate film are respectively located on both sides of the panel body, and the polyethylene terephthalate film and the supporting layer are located on the same side of the panel body.

[0020] On the other hand, an embodiment of the present disclosure further provides a method for manufacturing a flexible display structure, the method comprising:

[0021] Providing a stacked flexible display panel and a supporting layer, wherein the flexible display panel has a first surface and a second surface opposite to each other, and a first side surface connecting the first surface and the second surface;

[0022] A reinforcing adhesive strip is formed on the first side surface, and the reinforcing adhesive strip bonds the flexible display panel and the supporting layer.

[0023] Optionally, forming a reinforcing strip on the first side surface includes:

[0024] spraying UV-moisture dual curing adhesive on the first side through a nozzle;

[0025] The UV-moisture dual-curing adhesive is cured to form the reinforcing adhesive strip.

[0026] Optionally, curing the UV-moisture dual-curing adhesive to form the reinforcing adhesive strip includes:

[0027] While the UV-moisture dual-curing adhesive is sprayed on the first side, the UV-moisture dual-curing adhesive sprayed on the first side is irradiated with UV light until the UV-moisture dual-curing adhesive is cured into the reinforcing adhesive strip.

[0028] Optionally, curing the UV-moisture dual-curing adhesive to form the reinforcing adhesive strip includes:

[0029] While spraying the UV-moisture dual-curing adhesive on the first side, irradiating the UV-moisture dual-curing adhesive sprayed on the first side with UV light until the UV-moisture dual-curing adhesive is semi-cured;

[0030] The flexible display panel is left to stand until the UV-moisture dual-curing adhesive is completely cured.

[0031] On the other hand, an embodiment of the present disclosure further provides a display device, comprising the flexible display structure as described above.

[0032] The beneficial effects brought by the technical solution provided by the embodiments of the present disclosure include at least:

[0033] The flexible display panel has a first surface and a second surface relative to each other, and a first side surface connecting the first surface and the second surface. A reinforcing strip is arranged on the first side surface, and the reinforcing strip is used to bond the flexible display panel and the supporting layer, so that the flexible display panel and the supporting layer are more tightly combined. The reinforcing strip can improve the bending performance of the flexible display structure and reduce the possibility of the flexible display panel and the supporting layer being separated and delaminated during normal use. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0035] Figure 1 It is a layered schematic diagram of a flexible display structure in the related art;

[0036] Figure 2 is a partial structural schematic diagram of a flexible display structure provided by an embodiment of the present disclosure;

[0037] Figure 3 yes Figure 2 AA cross-section diagram;

[0038] Figure 4 is a partial structural schematic diagram of a flexible display structure provided by an embodiment of the present disclosure;

[0039] Figure 5 is a partial structural schematic diagram of a flexible display structure provided by an embodiment of the present disclosure;

[0040] Figure 6 is a structural schematic diagram of a flexible display structure provided by an embodiment of the present disclosure;

[0041] Figure 7 is a structural schematic diagram of a flexible display structure provided by an embodiment of the present disclosure;

[0042] Figure 8 is a structural schematic diagram of a flexible display structure provided by an embodiment of the present disclosure;

[0043] Fig. 9 is a structural schematic diagram of a flexible display structure provided by an embodiment of the present disclosure;

[0044] Fig.10 A method for manufacturing a flexible display structure provided by an embodiment of the present disclosure;

[0045] Fig.11 A method for manufacturing a flexible display structure provided by an embodiment of the present disclosure;

[0046] Fig.12 is a schematic structural diagram of a flexible display panel and a support layer provided in an embodiment of the present disclosure;

[0047] Fig.13 is a structural schematic diagram of a flexible display panel provided with a transparent cover plate provided in an embodiment of the present disclosure;

[0048] Fig.14 It is a schematic diagram of the process of spraying UV-moisture dual-curing adhesive provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0049] In order to make the objectives, technical solutions and advantages of the present disclosure more clear, the embodiments of the present disclosure will be further described in detail below with reference to the accompanying drawings.

[0050] Figure 1 It is a layered schematic diagram of a flexible display structure in the related art. Figure 1 As shown, the flexible display structure includes a flexible display panel 1 and a support layer 2, and the support layer 2 is usually made of stainless steel. The flexible display panel 1 and the support layer 2 are bonded by an adhesive layer 3. Since the modulus between the flexible display panel 1 and the support layer 2 is quite different, when the flexible display structure is bent, the deformation between the flexible display panel 1 and the support layer 2 is not synchronized, resulting in a large displacement between the flexible display panel 1 and the support layer 2. The stress generated by the displacement has Figure 1 The component force F shown in the figure is insufficient to offset the dislocation caused by the cohesive force generated by the adhesive layer 3. Finally, under the action of the component force F, the flexible display panel 1 and the support layer 2 are separated, and the flexible display structure is delaminated, which affects the normal use of the flexible display screen. At present, in order to reduce the possibility of delamination of the flexible display screen during use, the flexible display structure is usually subjected to a bending test, and only products that pass the bending test can be sold. However, during the bending test of the relevant flexible display screen, for example, in a bending test with a bending radius of 2.5 mm, the flexible display panel will be separated from the support layer and delaminated, and the bending test cannot be passed, resulting in a low product yield.

[0051] Figure 2 It is a partial top view of a flexible display structure provided by an embodiment of the present disclosure. Figure 3 yes Figure 2 AA cross-section diagram. Figure 3 As shown, the display device includes a reinforcing adhesive strip 10 , a stacked flexible display panel 20 and a supporting layer 30 .

[0052] The flexible display panel 20 has a first surface 21 and a second surface 22 opposite to each other, and a first side surface 23 connecting the first surface 21 and the second surface 22 . The reinforcing strip 10 is located on the first side surface 23 , and the reinforcing strip 10 bonds the flexible display panel 20 and the support layer 30 .

[0053] The flexible display panel has a first surface and a second surface relative to each other, and a first side surface connecting the first surface and the second surface. A reinforcing strip is arranged on the first side surface, and the reinforcing strip is used to bond the flexible display panel and the supporting layer, so that the flexible display panel and the supporting layer are more tightly combined. The reinforcing strip can improve the bending performance of the flexible display structure and reduce the possibility of the flexible display panel and the supporting layer being separated and delaminated during normal use.

[0054] like Figure 3 As shown, an adhesive layer 40 is provided between the flexible display panel 20 and the supporting layer 30, and the orthographic projection of the adhesive layer 40 on the supporting layer 30 is located within the orthographic projection of the flexible display panel 20 on the supporting layer 30. The adhesive layer 40 is used to bond the flexible display panel 20 and the supporting layer 30. Since the adhesive layer 40 will be deformed by a certain degree of extrusion during bonding, it may overflow from between the flexible display panel 20 and the supporting layer 30. Therefore, by controlling the area of ​​the adhesive layer 40, the orthographic projection of the adhesive layer 40 on the supporting layer 30 is located within the orthographic projection of the flexible display panel 20 on the supporting layer 30, so that the adhesive layer 40 can be prevented from overflowing after being squeezed.

[0055] By way of example, the adhesive layer 40 may be optical adhesive or foam.

[0056] Figure 4 FIG. 1 is a schematic diagram of a partial structure of a flexible display structure provided by an embodiment of the present disclosure. Figure 4 As shown, the flexible display panel 20 may include a stacked panel body 201, a polarizer 202, and a PET (polyethylene terephthalate) film 203. The polarizer 202 and the PET film 203 are respectively located on both sides of the panel body 201, and the PET film 203 and the supporting layer 30 are located on the same side of the panel body 201. The PET film 203 can be bonded to the panel body 201 through a pressure-sensitive adhesive 204, and the PET film 203 and the supporting layer 30 are bonded through an adhesive layer 40.

[0057] The panel body 201 may be an OLED (Organic Light-Emitting Diode) display panel.

[0058] Optionally, the reinforcing adhesive strip 10 is formed by curing with UV-moisture dual curing adhesive. The reinforcing adhesive strip 10 formed by curing with UV-moisture dual curing adhesive is soft in texture, has a storage modulus of 60kpa to 150kpa, and a shear strength of 3kgf / cm 2 ~5kgf / cm 2 , the higher storage modulus allows the reinforcing strip 10 to absorb most of the impact force, and the higher shear strength can overcome the stress generated when the flexible display structure is bent, reducing the risk of stratification of the flexible display structure. When the storage modulus is 60kpa to 150kpa, the reinforcing strip 10 can absorb more than 60% of the impact force. The UV-moisture dual-curing adhesive also has the characteristics of a low glass transition temperature, which reaches -35°C to -48°C, and has good waterproof performance. While preventing the flexible display panel 20 and the support layer 30 from stratifying, it can also protect the flexible display structure well, preventing the flexible display structure from being damaged in collisions or eroded by water vapor.

[0059] The surface 10a of the reinforcing rubber strip 10 away from the first side surface 23 can be a plane or a smooth curved surface, that is, the surface 10a of the reinforcing rubber strip 10 is smooth. If the surface 10a of the reinforcing rubber strip 10 is uneven, the reinforcing rubber strip 10 is easily damaged during the use of the flexible display structure. Making the surface 10a of the reinforcing rubber strip 10 a plane can help extend the life of the reinforcing rubber strip 10.

[0060] Optionally, the distance between the surface 10a of the reinforcing strip 10 away from the first side surface 23 and the first side surface 23 may be 5 μm to 300 μm. That is, the thickness of the reinforcing strip 10 may be 5 μm to 300 μm. An overly thick reinforcing strip 10 is not conducive to the use of the flexible display structure. While ensuring that the reinforcing strip 10 has sufficient strength to connect the flexible display panel 20 and the supporting layer 30, the reinforcing strip 10 may be set as thin as possible. Exemplarily, the thickness of the reinforcing strip 10 may be 5 μm to 50 μm.

[0061] The reinforcing strip 10 is arranged around the first side 23 of the display panel 20. When the flexible display structure is bent, delamination may occur on all sides. By arranging the reinforcing strips 10 on all sides of the flexible display panel 20, the delamination phenomenon of the flexible display structure can be further avoided. It is worth noting that the shape of the flexible display structure provided in the embodiment of the present disclosure can be rectangular or irregular, such as circular or elliptical. In the related art, if the shape of the flexible display structure is irregular, it is more likely to cause delamination when the flexible display structure is bent. In the embodiment of the present disclosure, reinforcing strips 10 are arranged on all sides of the flexible display panel 20, which can effectively avoid the delamination phenomenon of the flexible display structure.

[0062] like Figure 4As shown, the supporting layer 30 has a third surface 31 and a fourth surface 32 relative to each other, and a second side surface 33 connecting the third surface 31 and the fourth surface 32 . The third surface 31 is attached to the second surface 22 , and the orthographic projection of the flexible display panel 20 on the third surface 31 is located within the third surface 31 .

[0063] The reinforcing strip 10 may be located on the third surface 31. That is, the reinforcing strip 10 bonds the first side surface 23 of the flexible display panel 20 and the third surface 31 of the support layer 30, thereby preventing the flexible display panel 20 and the support layer 30 from being separated when the flexible display structure is bent, causing the flexible display structure to be delaminated.

[0064] Figure 5 It is a partial structural schematic diagram of a flexible display structure provided by an embodiment of the present disclosure. Figure 5 The flexible display structure shown is Figure 4 The difference between the flexible display structure shown is that the reinforcing strip 10 is also located on the second side 33. That is, the reinforcing strip 10 is bonded to the first side 23 of the flexible display panel 20, the third surface 31 of the support layer 30, and the second side 33, and a part of the reinforcing strip 10 is covered on the second side 33, so that the contact area between the reinforcing strip 10 and the support layer 30 can be increased, so that the bonding force between the reinforcing strip 10 and the support layer 30 is greater, and the flexible display panel 20 and the support layer 30 are further prevented from being separated, causing the flexible display structure to be delaminated.

[0065] The reinforcing strip 10 may be distributed between the plane where the first surface 21 of the flexible display panel 20 is located and the plane where the fourth surface 32 of the support layer 30 is located. If the reinforcing strip 10 covers the first surface 21 of the flexible display panel 20 or the fourth surface 32 of the support layer 30, it will protrude from the first surface 21 and the fourth surface 32, which is not only unsightly, but also the part of the reinforcing strip 10 located on the first surface 21 and the fourth surface 32 is easy to fall off during use, which may cause the reinforcing strip 10 located on the first side surface 23 to fall off together.

[0066] like Figure 5 As shown, the reinforcing strip 10 can be flush with the first surface 21 and the fourth surface 32, so that the contact area between the reinforcing strip 10 and the flexible display panel 20 and the support layer 30 can be maximized. This makes the bonding force between the reinforcing strip 10 and the support layer 30 stronger, further preventing the flexible display panel 20 from being separated from the support layer 30, causing the flexible display structure to be delaminated.

[0067] Figure 6 is a schematic diagram of a flexible display structure provided by an embodiment of the present disclosure. Figure 5 The difference between the flexible display structures shown is that Figure 6 In the embodiment, the orthographic projection of the flexible display panel 20 on the third surface 31 coincides with the third surface 31 .

[0068] In the flexible display structure, the reinforcing strip 10 is also located on the second side 33, that is, the reinforcing strip 10 adheres to the first side 23 of the flexible display panel 20 and the second side 33 of the supporting layer 30, thereby preventing the flexible display panel 20 from being separated from the supporting layer 30 when the flexible display structure is bent, causing the flexible display structure to be delaminated.

[0069] Figure 7 Schematic diagram of a flexible display structure provided by an embodiment of the present disclosure. Figure 7 As shown, the flexible display structure further includes a transparent cover plate 50. The transparent cover plate 50 is stacked on the flexible display panel 20, and the flexible display panel 20 is located between the transparent cover plate 50 and the support layer 30. The transparent cover plate 50 can provide protection for the flexible display panel 20 to prevent the flexible display panel 20 from being scratched.

[0070] The transparent cover plate 50 may be bonded to the flexible display panel 20 via an optical adhesive layer 60 .

[0071] Optionally, the transparent cover plate 50 may be made of colorless polyimide (CPI) or ultra-thin glass (UTG). Both CPI and UTG have good transparency and strength, and can provide protection for the flexible display structure without affecting the brightness of the flexible display structure.

[0072] like Figure 7 As shown, the transparent cover 50 has a fifth surface 51 and a sixth surface 52 relative to each other, and a third side surface 53 connecting the fifth surface 51 and the sixth surface 52 . The sixth surface 52 is attached to the first surface 21 , and the orthographic projection of the flexible display panel 20 on the sixth surface 52 is located within the sixth surface 52 .

[0073] The reinforcing adhesive strip 10 can bond the transparent cover plate 50 and the flexible display panel 20, thereby preventing the transparent cover plate 50 and the flexible display panel 20 from being separated.

[0074] The reinforcing adhesive strip 10 may be located on the sixth surface 52. That is, the reinforcing adhesive strip 10 bonds the sixth surface 52 of the transparent cover plate 50 and the first side surface 23 of the flexible display panel 20, thereby preventing the flexible display panel 20 from being separated from the transparent cover plate 50 when the flexible display structure is bent, causing the flexible display structure to be delaminated.

[0075] Figure 8 Schematic diagram of a flexible display structure provided by an embodiment of the present disclosure. Figure 8 As shown, the flexible display structure Figure 7 The difference between the flexible display structure shown in is that Figure 8In the flexible display structure shown, the reinforcing adhesive strip 10 is also located on the third side 53. That is, the reinforcing adhesive strip 10 is bonded to the first side 23 of the flexible display panel 20, the sixth surface 52 of the transparent cover plate 50, and the third side 53. A portion of the reinforcing adhesive strip 10 covers the third side 53, which can increase the contact area between the reinforcing adhesive strip 10 and the transparent cover plate 50, making the bonding force between the reinforcing adhesive strip 10 and the transparent cover plate 50 greater, further preventing the flexible display panel 20 from being separated from the transparent cover plate 50, causing the flexible display structure to be delaminated.

[0076] The reinforcing rubber strip 10 may be distributed between the plane where the fifth surface 51 of the transparent cover plate 50 is located and the plane where the fourth surface 32 of the support layer 30 is located. If the reinforcing rubber strip 10 covers the fifth surface 51 of the transparent cover plate 50 or the fourth surface 32 of the support layer 30, it will protrude from the fifth surface 51 and the fourth surface 32, which is not only unsightly, but also the part of the reinforcing rubber strip 10 located on the fifth surface 51 and the fourth surface 32 is easy to fall off during use, which may cause the reinforcing rubber strip 10 located on the first side surface 23 to fall off together.

[0077] like Figure 8 As shown, the reinforcing strip 10 can be flush with the fifth surface 51 and the fourth surface 32, so that the contact area between the reinforcing strip 10 and the transparent cover plate 50, the flexible display panel 20, and the support layer 30 can be maximized. This makes the bonding force between the reinforcing strip 10 and the transparent cover plate 50 stronger, further preventing the flexible display panel 20 from being separated from the transparent cover plate 50, causing the flexible display structure to be delaminated.

[0078] Fig. 9 is a schematic diagram of a flexible display structure provided by an embodiment of the present disclosure. Figure 8 The difference between the flexible display structures shown is that Fig. 9 In the flexible display structure shown, the orthographic projection of the flexible display panel 20 on the sixth surface 52 coincides with the sixth surface 52 .

[0079] In the flexible display structure, the reinforcing strip 10 is also located on the third side 53, that is, the reinforcing strip 10 adheres to the first side 23 of the flexible display panel 20 and the third side 53 of the transparent cover plate 50, so as to prevent the flexible display panel 20 from being separated from the transparent cover plate 50 when the flexible display structure is bent, thereby causing the flexible display structure to be delaminated.

[0080] for Figure 7 to Figure 9 The flexible display structure shown in FIG. 1 may also be a support layer 30. Figure 6 The setting method in .

[0081] The present disclosure also provides a display device, which includes: Figure 3 to Figure 9Any display structure shown. For example, the display device can be any product or component with a display function, such as a mobile phone, a tablet computer, a television, a monitor, a notebook computer, a digital photo frame, a navigator, etc.

[0082] Fig.10 A method for manufacturing a flexible display structure provided by an embodiment of the present disclosure. The method is used to manufacture Figure 3 to Figure 9 The flexible display structure shown in FIG. Fig.10 As shown, the method includes:

[0083] In step S11 , a stacked flexible display panel and a supporting layer are provided.

[0084] The flexible display panel has a first surface and a second surface opposite to each other, and a first side surface connecting the first surface and the second surface.

[0085] In step S12, a reinforcing strip is formed on the first side surface.

[0086] The reinforcing strip bonds the flexible display panel and the supporting layer.

[0087] The flexible display panel has a first surface and a second surface relative to each other, and a first side surface connecting the first surface and the second surface. A reinforcing strip is arranged on the first side surface, and the reinforcing strip is used to bond the flexible display panel and the supporting layer, so that the flexible display panel and the supporting layer are more tightly combined. The reinforcing strip can improve the bending performance of the flexible display structure and reduce the possibility of the flexible display panel and the supporting layer being separated and delaminated during normal use.

[0088] Fig.11 The present invention provides a method for manufacturing a flexible display structure. The method can be used to manufacture Figure 3 to Figure 9 The flexible display structure shown in FIG. Figure 7 As an example, the flexible display structure shown in FIG. Figure 12 to Figure 14 This method is described in detail. Fig.11 As shown, the method includes:

[0089] In step S21 , a stacked flexible display panel and a supporting layer are provided.

[0090] Fig.12 Schematic diagram of the structure of the flexible display panel and the support layer provided by the embodiment of the present disclosure. Fig.12 As shown, the flexible display panel 20 has a first surface 21 and a second surface 22 relative to each other, and a first side surface 23 connecting the first surface 21 and the second surface 22; the supporting layer 30 has a third surface 31 and a fourth surface 32 relative to each other, and a second side surface 33 connecting the third surface 31 and the fourth surface 32; and the third surface 31 is attached to the second surface 22.

[0091] The flexible display panel 20 may include a stacked panel body 201, a polarizer 202, and a PET film 203. The polarizer 202 and the PET film 203 are respectively located on both sides of the panel body 201, and the PET film 203 and the supporting layer 30 are located on the same side of the panel body 201. The PET film 203 can be bonded to the panel body 201 by a pressure-sensitive adhesive, and the PET film 203 and the supporting layer 30 are bonded by an adhesive layer 40.

[0092] After the flexible display panel 20 is bonded to the support layer 30 , the flexible display panel 20 may be laser cut to ensure that the tolerance of the outer contour of the flexible display panel 20 meets the design requirements.

[0093] In step S22, a transparent cover is disposed on the flexible display panel.

[0094] Fig.13 Schematic diagram of the structure of a flexible display panel provided with a transparent cover plate according to an embodiment of the present disclosure. Fig.13 As shown, the transparent cover plate 50 is stacked on the flexible display panel 20, and the flexible display panel 20 is located between the transparent cover plate 50 and the support layer 30. The transparent cover plate 50 can provide protection for the flexible display panel 20 to prevent the flexible display panel 20 from being scratched.

[0095] The transparent cover plate 50 may be bonded to the flexible display panel 20 via an optical adhesive layer 60 .

[0096] Optionally, the transparent cover plate 50 may be CPI or UTG. Both CPI and UTG have good transparency and strength, and can provide protection for the flexible display structure without affecting the brightness of the flexible display structure.

[0097] like Fig.13 As shown, the transparent cover plate 50 has a fifth surface 51 and a sixth surface 52 that are opposite to each other, and a third side surface 53 connecting the fifth surface 51 and the sixth surface 52 , and the sixth surface 52 is in contact with the first surface 21 .

[0098] In step S23, UV-moisture dual curing adhesive is sprayed on the first side through a nozzle.

[0099] Fig.14 FIG. 1 is a schematic diagram of the process of spraying UV-moisture dual curing adhesive provided by the embodiment of the present disclosure. Fig.14 As shown, the UV-moisture dual curing adhesive 70 is sprayed through a nozzle 80, and the pressure generated by the nozzle 80 is conducive to the UV-moisture dual curing adhesive 70 filling the tiny gaps on the first surface 23, so that after the UV-moisture dual curing adhesive 70 solidifies, the bonding force between the reinforcing strip 10 and the first surface 23 is stronger.

[0100] In step S24, the UV-moisture dual-curing adhesive is cured to form a reinforcing adhesive strip.

[0101] Reference Fig.14 The UV-moisture dual curing adhesive 70 can be cured in the following manner:

[0102] In a possible implementation, while the UV-moisture dual-curing adhesive 70 is sprayed on the first side 23 , the UV-moisture dual-curing adhesive 70 sprayed on the first side 23 is irradiated with ultraviolet light until the UV-moisture dual-curing adhesive 70 is cured into a reinforcing adhesive strip 10 .

[0103] The UV-moisture dual curing adhesive 70 can be cured under the irradiation of ultraviolet light. The UV-moisture dual curing adhesive 70 has good fluidity before curing. By irradiating the UV-moisture dual curing adhesive 70 with ultraviolet light while spraying the UV-moisture dual curing adhesive 70, the UV-moisture dual curing adhesive 70 can be quickly solidified and formed, thereby preventing the UV-moisture dual curing adhesive 70 from flowing. The UV-moisture dual curing adhesive 70 can be completely cured by controlling the intensity and irradiation time of the ultraviolet light to obtain the reinforcing adhesive strip 10. During the process of ultraviolet irradiation, the ultraviolet irradiation device 90 can move together with the nozzle 80.

[0104] In another possible implementation, while the UV-moisture dual-curing adhesive 70 is sprayed on the first side 23, the UV-moisture dual-curing adhesive 70 sprayed on the first side 23 can be irradiated with UV light until the UV-moisture dual-curing adhesive 70 is semi-cured, and the flexible display panel 20 is left standing until the UV-moisture dual-curing adhesive 70 is completely cured.

[0105] The UV-moisture dual-curing adhesive 70 can not only be cured under the irradiation of ultraviolet light, but also absorb moisture in the air and cure spontaneously. By controlling the intensity and irradiation time of ultraviolet light, the UV-moisture dual-curing adhesive 70 is semi-cured, for example, the UV-moisture dual-curing adhesive 70 is irradiated to cure 60% to 70%. Specifically, it can be judged according to the fluidity of the UV-moisture dual-curing adhesive 70, and the UV-moisture dual-curing adhesive 70 is irradiated until the UV-moisture dual-curing adhesive 70 does not flow. Then, by standing, the UV-moisture dual-curing adhesive 70 is completely cured. During the process of ultraviolet irradiation, the ultraviolet irradiation device 90 can move together with the nozzle 80. Since the UV-moisture dual-curing adhesive 70 only needs to be irradiated to semi-cured by the ultraviolet irradiation device 90, the time occupied by the single flexible display structure on the ultraviolet irradiation device 90 can be reduced, which is conducive to improving production efficiency and reducing production costs.

[0106] The above description is only an optional embodiment of the present disclosure and is not intended to limit the present disclosure. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A flexible display structure, characterized in that: The invention comprises a reinforcing adhesive strip (10), a stacked flexible display panel (20) and a supporting layer (30), wherein the flexible display panel (20) has a first surface (21) and a second surface (22) opposite to each other, and a first side surface (23) connecting the first surface (21) and the second surface (22), the reinforcing adhesive strip (10) is located on the first side surface (23), and the reinforcing adhesive strip (10) adheres the flexible display panel (20) and the supporting layer (30); The support layer (30) has a third surface (31) and a fourth surface (32) that are opposite to each other, and a second side surface (33) connecting the third surface (31) and the fourth surface (32); the third surface (31) is in contact with the second surface (22); the reinforcing strip (10) is also located on the second side surface (33); and the reinforcing strip (10) is bonded to the first side surface (23) and the second side surface (33).

2. The flexible display structure according to claim 1, characterized in that: The orthographic projection of the flexible display panel (20) on the third surface (31) is located inside the third surface (31); and the reinforcing adhesive strip (10) is bonded to the third surface (31).

3. The flexible display structure according to claim 1, characterized in that: The orthographic projection of the flexible display panel (20) on the third surface (31) coincides with the third surface (31).

4. The flexible display structure according to claim 2 or 3, characterized in that: The reinforcing rubber strip (10) is distributed between the plane where the first surface (21) is located and the plane where the fourth surface (32) is located.

5. The flexible display structure according to claim 1, characterized in that: The flexible display structure further comprises a transparent cover plate (50), wherein the transparent cover plate (50) is stacked on the flexible display panel (20), and the flexible display panel (20) is located between the transparent cover plate (50) and the support layer (30), and the reinforcing adhesive strip (10) bonds the transparent cover plate (50) and the flexible display panel (20).

6. The flexible display structure according to claim 5, characterized in that: The transparent cover plate (50) comprises a fifth surface (51) and a sixth surface (52) which are opposite to each other, and a third side surface (53) connecting the fifth surface (51) and the sixth surface (52); the sixth surface (52) is in contact with the first surface (21); and the orthographic projection of the flexible display panel (20) on the sixth surface (52) is located within the sixth surface (52); the reinforcing adhesive strip (10) is bonded to the sixth surface (52) and the first side surface (23), or the reinforcing adhesive strip (10) is also located on the third side surface (53); the reinforcing adhesive strip (10) is bonded to the first side surface (23), the sixth surface (52) and the third side surface (53).

7. The flexible display structure according to claim 5, characterized in that: The transparent cover plate (50) comprises a fifth surface (51) and a sixth surface (52) which are opposite to each other, and a third side surface (53) connecting the fifth surface (51) and the sixth surface (52); the sixth surface (52) is in contact with the first surface (21); the orthographic projection of the flexible display panel (20) on the sixth surface (52) coincides with the sixth surface (52); and the reinforcing adhesive strip (10) is bonded to the first side surface (23) and the third side surface (53).

8. The flexible display structure according to claim 6 or 7, characterized in that: The reinforcing rubber strip (10) is distributed between the plane where the fifth surface (51) is located and the plane where the surface of the support layer (30) away from the flexible display panel (20) is located.

9. The flexible display structure according to any one of claims 1 to 3, characterized in that: The surface of the reinforcing rubber strip (10) away from the first side surface (23) is a plane or a smooth curved surface.

10. The flexible display structure according to any one of claims 1 to 3, characterized in that: The distance between the surface of the reinforcing rubber strip (10) away from the first side surface (23) and the first side surface (23) is 5 μm to 300 μm.

11. The flexible display structure according to any one of claims 1 to 3, characterized in that: The reinforcing rubber strip (10) is arranged around the first side surface (23).

12. The flexible display structure according to any one of claims 1 to 3, characterized in that: The reinforcing adhesive strip (10) is formed by curing with ultraviolet-moisture dual-curing adhesive.

13. The flexible display structure according to any one of claims 1 to 3, characterized in that: The storage modulus of the reinforcing rubber strip (10) is 60 kPa to 150 kPa, and the shear strength is 3 kgf / cm 2 ~5kgf / cm 2 .

14. The flexible display structure according to any one of claims 1 to 3, characterized in that: An adhesive layer (40) is provided between the flexible display panel (20) and the supporting layer (30), and an orthographic projection of the adhesive layer (40) on the supporting layer (30) is located within an orthographic projection of the flexible display panel (20) on the supporting layer (30).

15. The flexible display structure according to any one of claims 1 to 3, characterized in that: The flexible display panel (20) comprises a stacked panel body (201), a polarizer (202) and a polyethylene terephthalate film (203); the polarizer (202) and the polyethylene terephthalate film (203) are respectively located on two sides of the panel body (201); and the polyethylene terephthalate film (203) and the support layer (30) are located on the same side of the panel body (201).

16. A method for manufacturing a flexible display structure, characterized in that: The method comprises: Providing a stacked flexible display panel and a supporting layer, wherein the flexible display panel has a first surface and a second surface opposite to each other, and a first side surface connecting the first surface and the second surface, and the supporting layer has a third surface and a fourth surface opposite to each other, and a second side surface connecting the third surface and the fourth surface, and the third surface is attached to the second surface; A reinforcing adhesive strip is formed on the first side surface and the second side surface, wherein the reinforcing adhesive strip bonds the flexible display panel and the supporting layer, and the reinforcing adhesive strip bonds the first side surface and the second side surface.

17. The manufacturing method according to claim 16, characterized in that: The forming of reinforcing strips on the first side surface and the second side surface comprises: spraying UV-moisture dual curing adhesive on the first side through a nozzle; The UV-moisture dual-curing adhesive is cured to form the reinforcing adhesive strip.

18. The manufacturing method according to claim 17, characterized in that: The step of curing the UV-moisture dual-curing adhesive to form the reinforcing adhesive strip comprises: While the UV-moisture dual-curing adhesive is sprayed on the first side, the UV-moisture dual-curing adhesive sprayed on the first side is irradiated with UV light until the UV-moisture dual-curing adhesive is cured into the reinforcing adhesive strip.

19. The manufacturing method according to claim 17, characterized in that: The step of curing the UV-moisture dual-curing adhesive to form the reinforcing adhesive strip comprises: While spraying the UV-moisture dual-curing adhesive on the first side, irradiating the UV-moisture dual-curing adhesive sprayed on the first side with UV light until the UV-moisture dual-curing adhesive is semi-cured; The flexible display panel is left to stand until the UV-moisture dual-curing adhesive is completely cured.

20. A display device, characterized in that: It comprises the flexible display structure as claimed in any one of claims 1 to 15.

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